Definable convolution and idempotent Keisler measures
Definable convolution and idempotent Keisler measures
复制标题
可定义的卷积和幂等 Keisler 度量
DOI:
10.1007/s11856-022-2298-2
复制
发表时间:
2022
影响因子:
1
通讯作者:
Gannon, Kyle
中科院分区:
文献类型:
--
作者:
Chernikov, Artem;Gannon, Kyle
We initiate a systematic study of the convolution operation on Keisler measures, generalizing the work of Newelski in the case of types. Adapting results of Glicksberg, we show that the supports of definable and finitely satisfiable (or just definable, assuming NIP) measures are nice semigroups, and classify idempotent measures in stable groups as invariant measures on type-definable subgroups. We establish left-continuity of the convolution map in NIP theories, and use it to show that the convolution semigroup on finitely satisfiable measures is isomorphic to a particular Ellis semigroup in this context.
登录
查看更多内容
DOI:
10.1093/qmath/haab011
发表时间:
2021
期刊:
The Quarterly Journal of Mathematics
影响因子:
--
作者:
Chernikov, Artem;Starchenko, Sergei
通讯作者:
Starchenko, Sergei
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Pierre Simon
通讯作者:
Pierre Simon
DOI:
--
发表时间:
2019
期刊:
影响因子:
--
作者:
Anand Pillay
通讯作者:
Anand Pillay
DOI:
10.1090/jams/896
发表时间:
2015-02
期刊:
arXiv: Logic
影响因子:
--
作者:
A. Chernikov;Pierre Simon
通讯作者:
A. Chernikov;Pierre Simon
DOI:
10.1090/s0002-9947-2012-05626-1
发表时间:
2010
影响因子:
1.3
作者:
E. Hrushovski;A. Pillay;Pierre Simon
通讯作者:
Pierre Simon